A.beforeB.latelyC.neverD.ever
A.before
B.lately
C.never
D.ever
A.before
B.lately
C.never
D.ever
A.Production costs do not include the true costs of environmental impact.
B.There axe subsidies to virgin materials.
C.Using virgin materials can protect environment.
D.The secondary materials are more expensive.
A.it fails to identify the proper proportion of different food groups.
B.it falls to distinguish between a hamburger and a chicken breast.
C.it involves too much on-line work to benefit those who need it.
D.it involves unlabelled, multi-colored strips out of a cartoon jumble.
A.Daughters in the working-class families try very hard to establish an independent life.
B.Children of working-class families tend to stay in the same geographical area where they were raised.
C.Interdependence between generations is more intense in working-class families.
D.In middle and upper-class families there are no problems with interdependence between generations.
A.in addition
B.in spite of
C.as for
D.along with
A.evidence the cause for the disappointment of the international computer makers in the goal of OLPC
B.illustrate good news for the world's poor
C.appeal the world's computer manufacturers
D.analyse the psychological reaction to the cheap trick advanced by OLPC
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